The awkward, distant, and wounded three sisters gather at their hometown for their father's birthday. However, on the day of the party, there is a big mess because of their little brother Jin-seob's abnormal behavior, and the past of the three sisters slowly reveals.
Unfortunately the movie Three Sisters is not yet available on HBO Max.
| Crew | Kim Byung-oh | Martial Arts Choreographer |
| Writing | Lee Yoon-ho | Storyboard |
| Production | Lee Jeong-eun | Producer |
| Editing | Lee Eun-Song | Digital Intermediate |
| Sound | Kim Mi-mi | Boom Operator |
| Directing | Lee Seung-won | Director |
| Writing | Lee Seung-won | Writer |
| Editing | Son Yeon-ji | Editor |
| Camera | Cho Young-chun | Director of Photography |
| Sound | Lee Seung-yeop | Sound Supervisor |
| Art | Jang Min-woo | Production Design |
| Sound | Park Ki-heon | Original Music Composer |
| Production | Moon So-ri | Producer |
| Production | Kim Sang-su | Producer |
| Costume & Make-Up | Sin Eun-yeong | Makeup & Hair |
| Lighting | Cho Dae-yeon | Lighting Director |
| Costume & Make-Up | Yi Choong-yun | Costume Design |
